<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" prop="mg_state">
                    <template slot-scope="scope">
                        <el-switch
                        v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180">
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色按钮 -->
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole"></el-button>
                    </el-tooltip>
                    
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenu"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户的对话框 -->
        <el-dialog
        title="提示"
        :visible.sync="addDialogVisible"
        width="50%"
        @click="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form ref="form" :model="addForm" :rules="addFormRules" label-width="80px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="form.name"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="form.name"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="form.name"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="form.name"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @click="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色:
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data(){
        //验证邮箱的规则
        var checkEamil = (rules,value,cb) =>{
            //验证邮箱的正则表达式
            const regEmail

            if(regEmail.test(value)){
                //合法的邮箱
                return cb()
            }

            cb(new Error('请输入合法的邮箱'))
        }

        //验证手机号的规则
        var checkMobile = (rules,value,cb) =>{
            //验证手机号的正则表达式
            const regMobile

            if(regMobile.text(value)){
                return cb()
            }

            cb(new Error('请输入合法的手机号'))
        }


        return{
            //获取用户列表的参数
            queryInfo:{
                query:'',
                //当前的页数
                pagenum:1,
                pagesize:2
            },
            userlist:[],
            total:0,
            //添加用户 对话框的显示与隐藏
            addDialogVisible:false,
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',
                eamil:'',
                mobile:''
            },
            //添加表单的验证规则对象
            addFormRules:{
                username:[
                    {required:true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                ],
                password:[
                    {required:true,message:'请输入用户密码',trigger:'blur'},
                    {min:3,max:10,message:'用户密码的长度在3~10个字符之间',trigger:'blur'}
                ],
                eamil:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机号码',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormEules:{
                email:[
                    {required:true,message:'请输入用户邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入用户手机',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            //控制分配角色对话框的显示和隐藏
            setRoleDialogVisible:false,
            //需要被分配角色的用户信息
            userInfo:{},
            //所有角色的数据列表
            rolesList:[]
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res}=this.$http.get('users',{ params: this.queryInfo})
            if(res.meta.status !== 200) {
                return this.$message.error('获取用户列表失败!')
            }
            this.userlist = res.data.userlist
            this.total=res.data.total
        },
        //监听 pagesize改变的事件
        handleSizeChange(newSize){
            this.queryInfo.pagesize=newSize
            this.getUserList
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage){
            this.queryInfo.pagenum=newPage
        },
        //监听 switch开关状态的改变
        async userStateChanged(){
            const {data:res}=this.$http.put(`/user/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status!==200){
                userinfo.mg_state=!userinfo.mg_state
                return this.$message.error('更新用户状态失败')
            }
            this.$message.success('更新用户状态成功')
        },
        //监听添加用户对话框的关闭时间
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮  添加新用户
        addUser(){
            this.$refs.addFormRef.validate(valid=>{
                if(!valid) return
                //可以发起添加用户的网络请求
                const {data:res}=this.$http.post('users',this.addForm)
                if(res.meta.status!==201){
                    this.$message.error('添加用户失败')
                }

                this.$message.success('添加用户成功')
                //隐藏添加用户的对话框
                this.addDialogVisible=false
                //重新获取用户的数据列表
                this.getUserList
            })
        },
        //展示用户编辑的对话框
        async showEditDialog(id){
            const {data:res}=this.$http.get('users/'+id)
            
            if(res.meta.status!==200) {
                return this.$message.error('查询用户信息失败')
            }

            this.editForm=res.data
            this.editDialogVisible=true
        },
        //监听修改用户对话框的关闭 事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
            const {data:res}= await this.$refs.editFormRef.validate(valid=>{
                if(!valid) return
                //发起修改用户信息的数据请求
                this.$http.put('users/'+this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })

                if(res.meta.status!==200){
                    return this.$message.error('更新用户信息失败')
                }
                
                //关闭对话框
                this.editDialogVisible=false
                //刷新数据列表
                this.getUserList
                //提示修改成功
                this.$message.success('更新用户信息成功')
            })
        },

        //根据id删除对应的用户信息
        removeUserById(id){
            //弹框询问用户是否删除数据
            const confirmResult=await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err=>err)

            //如果用户确认删除 则返回值为字符串 confirm
            //如果用户取消删除 则返回值为字符串 cancel
            if(confirmResult!=='confirm'){
                return this.$meassage.info('已取消删除')
            }

            const {data:res} = await this.$http.delete('users/'+id)
            if(res.meta.status!==200){
                return this.$message.error('删除用户失败')
            }

            this.$message.success('删除用户成功')
            this.getUserList

        },
        
        //展示分配角色的对话框
        async setRole(userInfo){
            this.userInfo=userInfo

            //在展示对话框之前  获取所有角色的列表
            const {data:res} = this.$http.get('roles')

            if(res.meta.status!==200){
                return this.$message.error('获取角色列表失败')
            }

            this.rolesList=res.data

            this.setRoleDialogVisible=true
        },

        //点击按钮  分配角色
        saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色')
            }

            this.$http.put(`users/${this.userInfo.id/role}`,{
                rid:this.selectedRoleId
            })

            if(res.meta.status!==200){
                return this.$message.error('更新角色失败')
            }

            this.$message.success('更新角色成功')
            this.getUserList()
            this.setRoleDialogVisible=false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.setRoleId=''
            this.userInfo={}
        }
    }
}
</script>

<style lang="less" scoped>

</style>